Half to william h



(No Model.)

. 0. P. MARTINI ENS ATTAGHMEINT FOR LAMPS.

No. 293-586;; V P'dteh'ted .Fb, 112, 1884.

F IGLI.

' u. PETERS. mawmo m. Wmhingian. n, c

UNITED Y STATES PATENT OFFICE.

CHARLES F. MARTINE, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE HALF TO WILLIAM H. KIMBALL, OF SAME PLACE.

LENS ATTACHMENT FOR' LAMPS.

SBEGIFIICATION forming part of Letters Patent No. 293,586, dated February 12, 1884.

- Application filed September 6, 1883. (No model.)

To all whom it may concern: bail, D, are forced into the grooves d d,whicl1 Be it known that 1, CHARLES F. MARTINE, latter are then pressed down, so as to firmlya citizen of the United States, residing at Boshold the loop D and secure it to the lens with- 5 ton,in the county of Suffolk and State of Massaout the necessity of soldering.

. 5 chusetts, have invented a new and useful Im- E represents an elastic holder, composed of provement in Lens Attachments for Lamps, of a piece of sheet-tin formed with a hook at its which the following is a specification. upper end, forhooking over the top of a lamp- 7 The object of my invention is to provide a chimney, A. The lower end of the holder E simple and ready means for applying a magis bent round in a circular form, andprovid- 1o nifying-lens to the chimneyof an ordinary coaled with holes, through which are passed the oil lamp, and also for readily adjusting the lens two sides of the loop D, the said loop passing in relation to the flame of the lamp, so as to through two thicknesses of thelower bentend, change the direction of the magnified rays as as'indicated in Fig. 3, by which means the loop 55 desired. D can be readily moved up or down and ad- 1 The invention consists in a means of conjusted on the holder E, and in consequence of necting the lens to aholder,which is provided the friction the loop will be held in any dewith a hook on its upper end for suspending sired position. The friction, if ever relaxed it from the top of a lamp-chimney, so that the by use, can be. readily increased by bending .60 lens can be adjusted or moved higheror lower the curved 'end of the holder E. The resilon the chimney and held in position by friciency of the holder also aids the friction.

tion or pressure of the connecting parts. The holder E, instead of being made of sheet The invention also consists. in a peculiar metal, maybe composed of wire withthe lower means for connecting the bail or wire to the ends bent to hold the loop D with the proper 65 rim or frame that surrounds the edge of the friction. I lens. What I- claim as my invention is- Referring to the accompanying drawings, 1. The combination, with a lamp-chimney, Figure 1 represents my invention as applied A, of a holder, E, having a hook at its upper to anordinary coal-oil-lamp chimney. Fig. 2 end, and curved and perforated at its lower 70 is a front elevation of a lens with my invention end, F, and the sliding loop D, attached to the 0 attached. Fig. 3 is a side view of the same. frame 0 of a lens, B, substantially as and for Fig. 4 is a detail View, showing the mode of atthe purpose set forth. caching the bail to the lens-frame. 2. The rim or frame 0 of a lens, B, con- A represents the chimney of a coal-oil lamp. structed with grooves l d, in combination with 7 5 B is a concavo-coii'vex lens of any suitable the loop D, as and for the purpose set forth. size or degree of convexity. In testimonywhereof I have'signedmy name Surrounding the lens Bis a metal rim or to this specification in the presence of two subframe, 0, in one portion of which, on the in-' scribing witnesses. ner side, are stamped two grooves, d d, at right angles to or transversely with the length of the o rim, (this being done before the rim is attached \Vitnesses:

to the lens.) When the rim or frame 0 is se- Jos. H. ADAMS, I cured to the lens, the ends of a wire loop or W. H. KIMBALL.

CHARLES F. MARTINE. 

